La Nordica Focolare 80 Idro Crystal D.S.A [20/76] Chimney cap

4. DESCRIPTION

Denition: thermo-replace according to EN 13229.

La NORDICA thermo-replace are suitable for heating living spaces equipped with a central heating system made up of radiators or

convectors completely or partially replacing the traditional gas or diesel boiler. These are ideal for holiday ats and weekend houses or as

auxiliary heating all year round. Wooden logs are used as fuel. The appliance works as an intermittent operating appliance.

The appliance is composed of painted and galvanised sheet steel and cast iron.

The replace is found inside the boiler, is built in 4 mm thick steel and is reinforced using welded nails. The water in the heating system

circulates in the boiler, which absorbs the heat produced in the replace.

The ceramic glass window (resistant up to 700°C) of the door provides a lovely view of the burning ames and prevents sparks and smoke

1A- PRIMARY air register (Picture 9 at page 69)

With the air register located under the door of the hearth, it is possible to adjust the air ow through the ash drawer and the grating in

direction of the fuel. The primary air is necessary for the combustion process. In order to open the air ow, the bar must be completely

pulled out. The ash drawer has to be emptied regularly, so that ash cannot hinder the intake of primary air for the combustion. Primary

air is also necessary to keep re live.

The primary air register must be almost completely closed during wood combustion, as otherwise the wood burns too quickly

and the thermo-product may overheat.

2A- SECONDARY air register (Picture 9 at page 69)

When the bar is pushed to the back the passage of the secondary is completely open.

The secondary air, passing through the two lateral jambs of the front side, heats itself starting the double combustion and keeping at

• the internal section must be preferably circular;

• be thermally insulated and water-proof and produced with materials suitable to resist to heat, combustion products and

possible condensates;

• not be throttled and show a vertical arrangement with deviations not greater than 45°;

• if already used, it must be clean;

• observe the technical data of the instructions manual;

Should the ues have a square or rectangular section, internal edges must be rounded with a radius not lower than 20 mm. For the

rectangular section, the maximum ratio between the sides must be = 1.5.

A too small section causes a decrease of the draught. It is suggested a minimum height of 4 m.

The following features are forbidden and therefore they endanger the good operation of the device: asbestos cement, galvanized steel,

this, tube the ue along its whole height. A too small section causes a decrease of the draught.

ATTENTION: as far as concern the realisation of the ue connection and ammable materials please follow the requirements provided by

UNI 10683 standard. The ue must be properly spaced from any ammable materials or fuels through a proper insulation or an air cavity.

It is FORBIDDEN to let plant piping or air feeding channels pass in the same ue. Moreover, it is forbidden to create movable or xed

openings on the same for the connection of further other devices (Picture 5 at page 66 ).

5.1. CHIMNEY CAP

The draught of the ue depends also on the suitability of the chimney cap.

Therefore, if it is handicraft constructed, the output section must be more than twice as big as the internal section of the ue.

Should it be necessary to exceed the ridge of the roof, the chimney cap must assure the discharge also in case of windy weather

(Picture 6 at page 66 - Picture 7 at page 67).